4i antenna

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4i antenna

27 links

Antennas : 12M Antennas : 160M
  • N4IS - New Waller Flag - Hi performance 160/80m rotatable RX antenna
    [ Hits: 3094 | Votes: 2 | Rating: 9.5 ]
Antennas : 2M
  • A cheap dual band ground plane antenna - This little antenna is cheap and easy to build, lightweight, and very functional on 2 meters and 70 centimeters by NA4IT
    [ Hits: 3465 | Votes: 3 | Rating: 6 ]
Antennas : 80M
  • 80m Vertical Antenna with Folded CounterPoise - A very efficient 80 meter Counterpoise antenna designed to reduce ground losses from inadequate radial systems beneath inverted L antennas, a project by DM2GM and DM4IM based on the original K2AV antenna concept.
    [ Hits: 1088 | Votes: 2 | Rating: 7 ]
Antennas : Baluns
  • QRO baluns - Construct your own heavy-duty baluns capable of matching your amp's output to various antennas.
    [ Hits: 1033 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • Center Connector for Dipole Antenna - This is another alternative home-brew center connector for a dipole. The parts used are common PVC accesories found at the home supply store.
    [ Hits: 861 | Votes: 3 | Rating: 10 ]
Antennas : Fan Dipole
  • The Multi-Band Fan Dipole - How to build a multi-band dipole antenna with a single coax feed. Instructions for a 160M antenna that will fit in the space that a 75M dipole will with almost as good of results as a full size 160M dipole.
    [ Hits: 3006 | Votes: 7 | Rating: 7.31 ]
  • Fan Dipole - The Fan dipole antenna offer a easy to setup and efficient HF multiband antenna that does not require tuners or antenna switches, diagram by YC8PVU.
    [ Hits: 2745 | Votes: 6 | Rating: 5.83 ]
Antennas : Handhelds
  • 2m HT antenna shootout - G4ILO compares popular antennas for 2 metre band handhelds so as to see how much you lose using a small inconspicuous antenna or how much you gain by using a long antenna.
    [ Hits: 862 | Votes: 5 | Rating: 5.6 ]
Antennas : Homebrewing Techniques Antennas : Indoor
  • 5 Band Indoor Magnetic Loop  updated - A indoor magnetic loop antenna that covers 20 17 15 12 and 10 meters band with a 3 meter lenght of 22 mm copper tube by G4IZH
    [ Hits: 9160 | Votes: 22 | Rating: 5.82 ]
Antennas : NVIS
  • How to build NVIS antenna - How to homebrew a ENVIS antenna for 80 and 40 meters band
    [ Hits: 1717 | Votes: 4 | Rating: 10 ]
Antennas : Portable
  • Handi-tenna 440 Beam Antenna - A 4 elements handitenna for 70 cm band. This is my version of the K5OE Handitenna. This one is a four Element instead of three, as I had less of a crunch on space than he did. The 1st three elements (Reflector, Driven Element, and Director 1) are the same dimensions as his were.
    [ Hits: 1441 | Votes: 4 | Rating: 6 ]
Antennas : Quadrifilar Helix
  • QFH antenna for weather satellite band - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable
    [ Hits: 4214 | Votes: 16 | Rating: 5.25 ]
  • A quadrifilar helix weather satellite receiving antenna - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable.
    [ Hits: 17050 | Votes: 14 | Rating: 6.01 ]
Antennas : Theory : Impedance matching
  • The Clemens Match - About the clemens match for beam antenna, as an alternative to common gamma matching techniques
    [ Hits: 1233 | Votes: 0 | Rating: 0 ]
Antennas : W3EDP
  • W3EDP Antenna by AE4IC - Post on a W3EDP experience by Bob Kellogg, AE4IC
    [ Hits: 816 | Votes: 0 | Rating: 0 ]
Antennas : Windom
  • New Carolina windom antenna  pop - PDF file by QRP Expressions by By N. T. Len Carlson, K4IWL
    [ Hits: 44189 | Votes: 56 | Rating: 7.79 ]
Operating Modes : Stealth Amateur Radio
  • G4ILO Stealth Amateur Radio - If you are a ham and live in a modern urban or suburban development, putting up a highly visible antenna may make it difficult to stay friends with your neighbours.
    [ Hits: 1561 | Votes: 2 | Rating: 10 ]
Radio Equipment : HF Portable Antenna : Super Antennas MP-1

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